Starless on 27 June 2007
This site claims 3% of carbon dioxide emissions come from volcanic activity, with the other 97% coming from human activities. However, it uses a figure of 17.6 billion tons for the amount of CO2 added annually to the atmosphere. Yulegoat's source said it was only 6.1 billion. I'm not sure why the figures are so different, purhaps differing definitions. Anyway, using Yulegoat's figure, volcanic activity accounts for about 9% of total CO2 emissions.
